1 /* SPDX-License-Identifier: GPL-2.0-only */
3  * Driver for the Intel integrated DMA 64-bit
16 #include <linux/io-64-nonatomic-lo-hi.h>
18 #include "virt-dma.h"
40 #define IDMA64C_CTLL_DST_WIDTH(x)	((x) << 1)	/* bytes per element */  argument
41 #define IDMA64C_CTLL_SRC_WIDTH(x)	((x) << 4)  argument
46 #define IDMA64C_CTLL_DST_MSIZE(x)	((x) << 11)	/* burst, #elements */  argument
47 #define IDMA64C_CTLL_SRC_MSIZE(x)	((x) << 14)  argument
48 #define IDMA64C_CTLL_FC_M2P		(1 << 20)	/* mem-to-periph */
49 #define IDMA64C_CTLL_FC_P2M		(2 << 20)	/* periph-to-mem */
54 #define IDMA64C_CTLH_BLOCK_TS_MASK	((1 << 17) - 1)
55 #define IDMA64C_CTLH_BLOCK_TS(x)	((x) & IDMA64C_CTLH_BLOCK_TS_MASK)  argument
68 #define IDMA64C_CFGH_SRC_PER(x)		((x) << 0)	/* src peripheral */  argument
69 #define IDMA64C_CFGH_DST_PER(x)		((x) << 4)	/* dst peripheral */  argument
70 #define IDMA64C_CFGH_RD_ISSUE_THD(x)	((x) << 8)  argument
71 #define IDMA64C_CFGH_WR_ISSUE_THD(x)	((x) << 18)  argument
81 #define IDMA64_RAW(x)		(0x2c0 + IDMA64_INT_##x)	/* r */  argument
82 #define IDMA64_STATUS(x)	(0x2e8 + IDMA64_INT_##x)	/* r (raw & mask) */  argument
83 #define IDMA64_MASK(x)		(0x310 + IDMA64_INT_##x)	/* rw (set = irq enabled) */  argument
84 #define IDMA64_CLEAR(x)		(0x338 + IDMA64_INT_##x)	/* w (ack, affects "raw") */  argument
151 static inline u32 idma64c_readl(struct idma64_chan *idma64c, int offset)  in idma64c_readl()  argument
153 	return readl(idma64c->regs + offset);  in idma64c_readl()
156 static inline void idma64c_writel(struct idma64_chan *idma64c, int offset,  in idma64c_writel()  argument
159 	writel(value, idma64c->regs + offset);  in idma64c_writel()
167 static inline u64 idma64c_readq(struct idma64_chan *idma64c, int offset)  in idma64c_readq()  argument
169 	return lo_hi_readq(idma64c->regs + offset);  in idma64c_readq()
172 static inline void idma64c_writeq(struct idma64_chan *idma64c, int offset,  in idma64c_writeq()  argument
175 	lo_hi_writeq(value, idma64c->regs + offset);  in idma64c_writeq()
198 static inline u32 idma64_readl(struct idma64 *idma64, int offset)  in idma64_readl()  argument
200 	return readl(idma64->regs + offset);  in idma64_readl()
203 static inline void idma64_writel(struct idma64 *idma64, int offset, u32 value)  in idma64_writel()  argument
205 	writel(value, idma64->regs + offset);  in idma64_writel()
214  * struct idma64_chip - representation of iDMA 64-bit controller hardware